฿30,568+ Cheap flights to Portsmouth

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
15 Jun — 22 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 16 May 2026.

Sun 7/619:45
BKK
-
SOU
2 stops29h 45m
Qatar Airways
Wed 17/608:15
SOU
-
BKK
2 stops23h 10m
Qatar Airways
Deal found 13/5฿35,506
Tue 4/803:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Mon 31/809:20
SOU
-
BKK
2 stops28h 05m
Qatar Airways
Deal found 14/5฿37,942
Mon 29/609:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Sun 5/720:00
SOU
-
BKK
2 stops29h 15m
Qatar Airways
Deal found 12/5฿38,202
Thu 25/603:00
BKK
-
SOU
2 stops46h 30m
Qatar Airways
Sun 5/720:00
SOU
-
BKK
2 stops28h 20m
Qatar Airways
Deal found 12/5฿40,964
Fri 26/609:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Thu 2/709:20
SOU
-
BKK
2 stops39h 00m
Qatar Airways
Deal found 12/5฿41,061
Wed 15/703:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Mon 27/709:20
SOU
-
BKK
2 stops28h 05m
Qatar Airways
Deal found 13/5฿41,094
Sun 19/709:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Mon 27/709:20
SOU
-
BKK
2 stops28h 05m
Qatar Airways
Deal found 13/5฿41,158
Sun 19/709:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Thu 30/709:20
SOU
-
BKK
2 stops39h 55m
Qatar Airways
Deal found 13/5฿41,256
Wed 15/703:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Sat 1/820:00
SOU
-
BKK
2 stops29h 15m
Qatar Airways
Deal found 13/5฿41,906
Sun 19/709:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Sun 26/709:20
SOU
-
BKK
2 stops28h 05m
Qatar Airways
Deal found 13/5฿42,003
Fri 26/609:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Tue 28/709:15
SOU
-
BKK
2 stops21h 40m
Qatar Airways
Deal found 12/5฿43,043
Fri 26/609:55
BKK
-
SOU
2 stops39h 35m
Qatar Airways
Thu 30/709:20
SOU
-
BKK
2 stops39h 55m
Qatar Airways
Deal found 12/5฿43,140

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 16 May 2026.

Return from

฿24,689

One-way from

฿30,568

Popular in

January

Cheapest in

November

Average price

฿29,919
China Eastern
  • China Eastern
  • 7/6-5/9
  • 2 total stops
  • 51h 30m total
  • Bangkok to London
Search Deals
Qatar Airways
  • Qatar Airways
  • 22/5
  • 2 total stops
  • 30h 30m total
  • Bangkok to Portsmouth
Search Deals
Highest demand for flights based on searches. 0% potential increase in price.
Search Deals
Cheapest flight prices on average. 0% potential price decrease (฿297 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 16 May 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 4/8

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Mon 31/8

09:20-19:25

2 stops28h 05m

฿37,942

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Fri 26/6

09:55-19:30

2 stops39h 35m

Southampton Eastleigh

Wed 8/7

20:00-06:20

2 stops28h 20m

฿40,964

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Fri 26/6

09:55-19:30

2 stops39h 35m

Southampton Eastleigh

Mon 6/7

09:20-12:55

2 stops21h 35m

฿40,964

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Mon 20/7

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Thu 30/7

09:20-07:15

2 stops39h 55m

฿41,158

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 21/7

02:30-19:30

2 stops23h 00m

Southampton Eastleigh

Sat 1/8

20:00-07:15

2 stops29h 15m

฿41,906

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 15/7

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Sat 1/8

20:00-07:15

2 stops29h 15m

฿41,906

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 30/6

09:55-19:30

2 stops39h 35m

Southampton Eastleigh

Mon 27/7

09:20-19:25

2 stops28h 05m

฿43,043

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sun 28/6

09:55-19:30

2 stops39h 35m

Southampton Eastleigh

Mon 27/7

09:20-19:25

2 stops28h 05m

฿43,043

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sun 28/6

09:55-19:30

2 stops39h 35m

Southampton Eastleigh

Sun 26/7

09:20-19:25

2 stops28h 05m

฿44,797

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Fri 26/6

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Tue 28/7

09:15-12:55

2 stops21h 40m

฿47,428

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 19 resultsSorted by cheapest first
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2

Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from Bangkok to Portsmouth takes 22 hours 30 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from Bangkok to Portsmouth are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, China Eastern is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around ฿9,796, however they can be found for as little as ฿8,446.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Bangkok offers the quickest one-way flight (22 hours 30 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aeropartment & Aerotel, London Heathrow Airport, Terminal 4, Ev Stations & Cheap Parking On Site! is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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Fly with Cheapflights

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How does Cheapflights help users find flights to Portsmouth?

When you search for this flight to Portsmouth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets to Portsmouth?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Portsmouth.

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Portsmouth flexibly with Cheapflights today.

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